Two new flavone glycosides from the seeds of Impatiens balsamina L.

Abstract

Two new flavone glycosides were isolated from the seeds of Impatiens balsamina L. and their structures were determined as quercetin-3-O-[α-l-rhamnose-(1 → 2)-β-d-glucopyranosyl]-5-O-β-d-glucopyranoside (1), and quercetin-3-O-[(6‴-O-caffeoyl)-α-l-rhamnose-(1 → 2)-β-d-glucopyranosyl]-5-O-β-d-glucopyranoside (2) on the basis of various spectral and chemical studies.

Keywords:

• Impatiens balsamina L.
• flavone glycosides
• 5-O-β-d-glycopyranosides

Acknowledgement

We are thankful to Prof. Dong-Jun Chen of China Pharmaceutical University for spectral measurements.